Einstein studied the relation of energy and mass.
爱因斯坦研究了能量和质量的关系。
The formula of the relation of penetration H and specific energy input W is gotten.
并得到了焊接熔深H与输入线能量W的数学表达式。
Energy has dual relation ship with human well-being.
能源与人类幸福有着双重关系。
Energy has dual relation ship with human well-being.
能源与人类幸福有着双重关系。
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